Table 2. Reproducibility of tract metrics.

A
extended	FA					ADC [×10–3 mm2/s]
	mean	σws	σbs	COV	ICC	mean	σws	σbs	COV	ICC
CC	0.362	0.010	0.015	0.028	0.635	0.864	0.014	0.052	0.016	0.932
cing	0.421	0.015	0.011	0.035	0.109	0.773	0.016	0.031	0.021	0.754
PT	0.506	0.015	0.021	0.029	0.600	0.703	0.013	0.019	0.018	0.617
OR	0.458	0.009	0.032	0.019	0.926	0.824	0.017	0.068	0.021	0.938
AF	0.389	0.005	0.019	0.014	0.921	0.757	0.015	0.028	0.020	0.754

Reproducibility of tract metrics for both proximal (A) and extended (B) tract segmentations and paired t-test p-values for comparison of proximal and extended metrics (C). σ_bs: between-subject standard deviation; σ_ws: within-subject standard deviation; COV: coefficient of variation; ICC: intraclass correlation coefficient.

FA: fractional anisotropy; ADC: apparent diffusion coefficient; VOL: tract volume; TDI: tract density.

CC: genu of the corpus callosum; Ci: cingulum; PT: pyramidal tract; OR: optic radiation; AF: arcuate fasciculus.